Detachable telescope mount



Oct. 31, 1950 J. c. ROBERTSON 2,523,080

DETACHABLE TELESCOPE MOUNT f Filed Oct. 3, 1947 Fig./.

Inventor James 6. Robertson Patented Oct. 31, 1950 UNITED STATES PATENTOFFICE DETACHABLE TELESCOPE MOUNT James C. Robertson, North Little Rock,Ark.

Application October 3, 1947, Serial No. 777,831

/ 2 Claims.

This invention relates to new and useful improvements in telescopemounts and the primary object of the present invention is to provide adetachable telescope mount so designed as to permit the same to bequickly and readily removed from a gun barrel or replaced thereuponwithout in any way interfering with the normal accuracy of thetelescope.

In the drawings:

Fig. 1 is a side elevation view of the improved gunsight mount attachedto the barrel of a conventional gun;

Fig. 2 is a transverse vertical sectional view taken substantially onthe plane of section line 2-2 of Figure 1;

Figure 3 is a transverse vertical sectional view taken substantially onthe plane of section line 3-3 of Figure 1;

Figure 4 is a longitudinal vertical sectional view taken substantiallyon the plane of section line 4-4 of Figure 3 of the telescope removedtherefrom; and,

Figure 5 is a group perspective view of the rear elements used inconjunction with the present invention.

Referring now to the drawings in detail, wherein for the purpose ofillustration, there is disclosed a preferred embodiment of the presentinvention, the numeral [0 represents a conventional gun having a usualbarrel I2.

Removably secured to the upper periphery of the barrel l2 by the use ofa fastener I4, is a forward support block l6 having an arcuate groove orchannel [8 formed in its lower face that conforms to the upper peripheryof the barrel [2. A longitudinal arcuated seat 20 is also provided inthe upper face of the forward block I6 and conforms to the lowerperiphery of a forward sleeve or cylinder 22. For the purpose of fixedlysecuring the forward sleeve 22 in the seat 20, there is preferablyprovided silver solder 24. The forward extremities 26 of the sleeve 22terminate in a plane which is inclined relative to the longitudinal axisof the barrel I2. The rear end 28 of the sleeve 22 is externallythreaded and receivably engages an internally threaded ring 30. Opposedlongitudinal slots 32 are provided in the threaded end 28 of the sleeve22 to permit a yielding frictional adjustment of the sleeve 22 about theouter periphery of a telescope 34.

Removably secured by a fastener 36 to the rear portion of the barrel [2is a rear support block 38 having an arcuate groove 40 in its lower faceconforming to the upper periphery of the barrel l2. The upper face ofthe block 38 is provided with a forwardly tapered dove-tail groove 42that frictionally engages a forwardly tapering dovetail projection 44integrally formed with the lower face of a mounting block 46.

A longitudinal, arcuate seat 48 is provided in the upper face of themounting block 46 to conform to the lower periphery of a rear sleevewhich is fixedly secured in said seat 48 by silver solder 52. The rearend 54 of this sleeve 50 is externally threaded to receivably engage aninternally threaded adjusting ring 56, and opposed longitudinal slots 58are provided in the rear end 54 of the sleeve 50 to provide a desiredresiliency to the same for clampingly engaging the outer periphery ofthe telescope 34.

It should be noted, that the tapered dovetailed rear block permits thetelescope to be applied precisely, and that the binding effect of thedove-tail plus the longitudinal taper acts as a guide, giving a rigidefiect as well as accuracy when replacing the telescope. Also theforward block, with the holding sleeve machined properly, will act as acollet-chuck, accurately centering the telescope each time the same isinserted therein. This forward sleeve will also act as a sun shade andlens protector due to the forward inclination of its forwardextremities.

In view of the foregoing description taken in conjunction with theaccompanying drawings it is believed that a clear understanding of theconstruction, operation and advantages of the device will be quiteapparent to those skilled in this art. A more detailed description isaccordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shownand described a preferred embodiment of the invention the same issusceptible to certain changes fully comprehended by the spirit of theinvention as herein described and the scope of the appended claims.

Having described the invention, what is claimed as new is:

1. A telescope mount for firearms comprising a forward support membersecured to a gun barrel and having a concaved recess in its undersurface for receiving the upper periphery of a gun barrel, a telescopereceiving sleeve fixed to said forward support member, a rear supportmember detachably secured to a gun barrel and having a concaved recessin its upper surface receiving the upper periphery of a gun barrel, adove-tail groove provided in the upper surface of said rear supportmember, said groove tapering inwardly and forwardly, a block having aconcaved recess in its upper portion and a substantially flat lowersurface, a forwardly tapering dove-tail integrally formed with the lowersurface of said block and slidably received in said groove for limitedmovement relative to said rear support member, a cylindrical memberfixed in 5 the concaved recess in the upper portion of said rear supportmember, said cylindrical member including a rear externally threaded endportion projecting rearwardly from said rear support member,circumferentially spaced longitudinal slots provided in the rear endportion of said cylindrical member, and an internally threaded ringreceivably engaging the rear end portion of said cylindrical member fortightening said cylindrical member about the outer periphery of atelescope.

2. The combination of claim 1 wherein said sleeve includes an inclinedforward end portion, said sleeve having a rear externally threaded endportion extending rearwardly of said forward support member, a pluralityof circumferentially spaced, longitudinal slots provided in the rear end:portion of said sleeve, and a locking collar receivably engaging therear end portion of said sleeve.

JAMES C. ROBERTSON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS 10 Number Name Date 830,729 Mann Sept. 11, 1906983,047 Grant Jan. 31, 1911 2,126,195 Langsner Aug. 9, 1938 2,193,302Stith Mar. 12, 1940 15 2,200,869 Albree May 14, 1940 X 2,202,000 GrayMay 28, 1940 2,350,169 Kesselring May 30, 1944 2,401,367 Nagel June 4,1946 FOREIGN PATENTS Number Country Date 22,921 Norway 1913

